The 22-year-old will make her first public appearance at the festival since her cheating scandal, reported Showbizspy.
Stewart hopes her personal life doesn't overshadow how the motion picture is received by the critics.
"Kristen Stewart hasn't been able to get a wink of sleep in the run-up to the film festival. Even though members of the media have been strictly told that questions about her cheating scandal are off-limits, she's been fretting over the film's premiere.
"She really hopes that the critics are kind to her when it comes to the reviews and they don't judge her on her personal life," a source said.
